Surge Protection for Commercial Projects

[curious101]

Hi,
I know surge protection is required for dwelling units per NEC 2020 230.67. Does anywhere in NEC 2020 require SPD for small commercial projects?
Thank you!

 

[don_resqcapt19]

No general requirements, but there are some specific ones like in Article 700 and 701.

 

[curious101]

No general requirements, but there are some specific ones like in Article 700 and 701.

Thank you!

 

[Lbartowski]

Can SPD be installed at the main service to protect 150 dwelling units (condos)? I'm getting conflicting reports as to whether it is required in each unit panel, or just at the service. I assume at each panel is a better design, but 1 at the service is all that is required?

 

[petersonra]

Can SPD be installed at the main service to protect 150 dwelling units (condos)? I'm getting conflicting reports as to whether it is required in each unit panel, or just at the service. I assume at each panel is a better design, but 1 at the service is all that is required?

What does the code actually say? If it say protection is required dwelling units, that is different than if it says protection is required for each dwelling unit.

 

[don_resqcapt19]

Can SPD be installed at the main service to protect 150 dwelling units (condos)? I'm getting conflicting reports as to whether it is required in each unit panel, or just at the service. I assume at each panel is a better design, but 1 at the service is all that is required?

The current language permits one at the service disconnect. It is my understanding the the 2023 code will require one for each dwelling unit.